According to a paper by Dr. Rachel Colley and Dr. Mark Tremblay, the answer is Yes. Their paper, “The fractionalization of physical activity throughout the week is associated with the cardiometabolic health of children and youth,” was published in BMC Public Health. The paper revealed that children and youth who accumulate at least 60 minutes of moderate- to vigorous-intensity physical activity (MVPA) per day less than five days per week are more insulin resistant than those who accumulate at least 60 minutes of MVPA at least five days per week. A summary of the paper is below along with citation details.
Ian Janssen, Suzy L Wong, Rachel Colley, Mark S Tremblay. The fractionalization of physical activity throughout the week is associated with the cardiometabolic health of children and youth. BMC Public Health 2013, 13:554
ABSTRACT: Background:The influence of the fractionalization of moderate- to vigorous- intensity physical activity (MVPA) throughout the week on the health of children is unknown. We compared cardiometabolic risk factors in physically active children who accumulated their weekly MVPA in different patterns. Methods: We studied 745 participants aged 6â€“19 years. MVPA was measured using accelerometers over 7 days. Three groups were created:Â Insufficiently Active,Â <60 minutes/day of MVPA on average;Â Infrequently Active,Â â‰Ą60 minutes/day of MVPA on average but exceeding the 60 minute target <5 days; andÂ Frequently Active,Â â‰Ą60 minutes/day MVPA on average and exceeding the 60 minute target â‰Ą5 days. Percentile scores for 8 cardiometabolic risk factors were determined. Results: The least favorable cardiometabolic risk factor profile was observed in theÂ Insufficiently ActiveÂ group. TheÂ Frequently ActiveÂ group had more favorable (5â€“6 percentile unit difference) diastolic blood pressure, HDL-cholesterol, insulin resistance, and metabolic syndrome scores than theÂ Infrequently ActiveÂ group, although only the difference for insulin resistance was statistically significant (Pâ€‰<â€‰0.05). These differences remained after controlling for the weekly volume of MVPA. Conclusion: The fractionalization of MVPA throughout the week was associated with insulin resistance.
Click here to read the paper in full for free.